The pilot reported that he completed two successful aerial application flights from the same 2,000-foot turf runway before the accident flight. For the next chemical application, the airplane was loaded on downsloping terrain, in a tail-high attitude, just before the accident flight. This position may have affected the accuracy of the sight gauge. The pilot was distracted during the chemical loading and refueling and did not recheck the level of the chemical in the hopper. In a postaccident interview, the pilot stated that after loading, the airplane exceeded its maximum gross weight by about 500 pounds. The temperature was about 95 degrees Fahrenheit and the wind was from 270 degrees at 5 knots. The pilot departed with 10 degrees of flaps. The airplane became airborne but did not get out of ground effect. According to the pilot, the airplane “sagged” and the left main landing gear hit an embankment. The airplane landed in the adjacent cornfield and sustained substantial damage to the wings and fuselage. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. He stated that a dust devil may have affected the airplane’s performance.